Home / 420,849.57-580,772.37-229,863.39

Finding the Fourth Proportional to 420,849.57, 580,772.37 and 229,863.39

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Solution

The fourth proportional to 420,849.57, 580,772.37 and 229,863.39 is: 317,211.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,849.57 : 580,772.37 = 229,863.39 : x
  2. Step 2: Convert to fraction form
    420,849.57/580,772.37 = 229,863.39/x
  3. Step 3: Cross multiply
    420,849.57x = 580,772.37 × 229,863.39
  4. Step 4: Simplify right side
    420,849.57x = 133,498,305,786.53
  5. Step 5: Solve for x
    x = 133,498,305,786.53/420,849.57
  6. Step 6: Final answer
    x = 317,211.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.